Finding the Fourth Proportional to 12,391.56, 17,100.18 and 7,677

Step by Step Solution

1. Step 1: Write the proportion equation
   12,391.56 : 17,100.18 = 7,677 : x
2. Step 2: Convert to fraction form
   12,391.56/17,100.18 = 7,677/x
3. Step 3: Cross multiply
   12,391.56x = 17,100.18 × 7,677
4. Step 4: Simplify right side
   12,391.56x = 131,278,081.86
5. Step 5: Solve for x
   x = 131,278,081.86/12,391.56
6. Step 6: Final answer
   x = 10,594.15